"No Matter Where You Go... There You Are."
"Oh me oh my a lovely day is dawning. Oh what a joy I didn't wake up dead. So I can go to work and then resume my yawning, and get my sleep on site instead of in my bed" - Daria Morgendorffer (with my twist)

"No Matter Where You Go... There You Are."
"Oh me oh my a lovely day is dawning. Oh what a joy I didn't wake up dead. So I can go to work and then resume my yawning, and get my sleep on site instead of in my bed" - Daria Morgendorffer (with my twist)

The fuel pressure fluctuating between 42-50 at idle is bordering on abnormal. I would take dellis advise a watch the pressure while driving.

Also, the connector at the coil can cause the code you have. Pull the red tab out and disassemble the connector. Squeeze the sides of the sockets in a little to tighten the fit up. i know this isnt an optimal method of doing things, but it works. You can check the fit before you reassemble.

Another approach... you can eliminate different circuits by back pinning into connectors, run wires to a meter thorough passenger window, drive it and watch the meter. If you have a diagram and the time to tinker with it, you can use the process of elimination.

You are correct that he coil driver is a weak point in the PCM. PM JS97zj , he may have a source for some of the internal parts or point you in the right direction. he has writeup on here for resoldering the connections on the board.